The DAC3482 is a dual 16-bit DAC with max input data rate of up to 625MSPS per DAC and max DAC update rate of 1.25GSPS after the final, selectable interpolation stages. With build-in interpolation filter of 2x, 4x, 8x, and 16x options, the lower input data rate can be interpolated all the way to 1.25GSPS. This allows the DAC to update the samples at higher rate, and pushes the DAC images further away to relax anti-image filer specification due to the increased Nyquist bandwidth. With integrated coarse and fine mixers, baseband signal can be upconverted to an intermediate frequency (IF) signal between the baseband processor and post-DAC analog signal chains.

The DAC can output baseband or IF when connected to post-DAC analog signals chain components such as transformers or IF amplifiers. When used in conjunction with TI RF quadrature modulator such as the TRF3705, the DAC and RF modulator can function as a set of baseband or IF upconverter. With integrated QMC circuits, the LO offset and the sideband artifacts can be properly corrected in the direct up-conversion applications. The DAC3482 provides the bandwidth, performance, small footprint, and lower power consumption needed for multi-mode 2G/3G/4G cellular base stations to migrate to more advanced technologies, such as LTE-Advanced and carrier aggregation on multiple antennas.